默认在CMake中构建自定义目标 [英] Build custom target by default in CMake

问题描述

我想使用cmake运行自定义命令。这听起来像是一个非常简单的任务/问题，但令人沮丧的是找到一个例子很困难。

I'd like to run a custom command with cmake. That sounds like an incredibly simple task/question, but it's frustrating how difficult it is to find an example.

这就是我正在尝试做的事情：

Here's what I'm attempting to do:

$ cmake .
$ make
> Hello World! (Output)

在Gnu中非常简单：

bar: 
        echo Hello World!

但是我想用cmake做到这一点。根据我一直在阅读的内容，应该可以使用下面的 CMakeLists.txt 文件做到这一点：

But I'm trying to do this in cmake. Based on what I've been reading, I should be able to do that with the CMakeLists.txt file below:

cmake_minimum_required(VERSION 3.6)
project(foo)
add_custom_target(bar)
add_custom_command(
  TARGET   bar
  COMMAND  "echo Hello World!"
)

当前，如果我打电话给我 make 。我需要显式调用 make bar 。如何在全部食谱中添加 bar ？

Currently there is no work to do if I just call make. I need to explicitly call make bar. How can I add bar to the all recipe?

我尝试添加 add_dependency（foo bar），但是 foo 是不存在的目标。如果有一些我不知道的超级目标，那将是完美的。然后，我可以将其用作我的自定义命令的目标，而不必担心 bar 。

I've tried adding add_dependency(foo bar), but foo is a non-existent target. If there is some super-target that I'm unaware of that would be perfect. Then I could just use that as the TARGET for my custom command and not bother with bar.

推荐答案

使用 ALL 选项默认情况下构建目标 ：

Use ALL option for build the target by default:

add_custom_target(bar ALL)

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